/* Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.taobao.dataapp.crmtag.custeriong.kmeans;

import java.io.IOException;

import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Reducer;
import org.apache.mahout.clustering.ClusterObservations;

public class KMeansCombiner extends Reducer<Text, ClusterObservations, Text, ClusterObservations> {

  @Override
  protected void reduce(Text key, Iterable<ClusterObservations> values, Context context)
    throws IOException, InterruptedException {
    Cluster cluster = new Cluster();
    for (ClusterObservations value : values) {
      cluster.observe(value);
    }
    context.write(key, cluster.getObservations());
  }

}
